Sister cities of Richmond upon Thames (London borough)

The London Borough of Richmond upon Thames ( pronunciation ) is a London borough in south-west London, England, which forms part of Outer London. It is the only London borough north and south of the River Thames. However, the river becomes gradually narrower to the south than it is in central London and adopts other notable aspects. The borough, as with all London boroughs was an amalgamation of smaller council areas under the London Government Act 1963. Three districts of the area are within the London postal district. Its council is covered in detail at Richmond upon Thames London Borough Council.

The borough is home to the National Physical Laboratory and the attractions of Hampton Court Palace, Twickenham Stadium and the WWT London Wetlands Centre that draw domestic and international tourism.